1N4148UBCD

Diode Arrays Overview

The Microchip Technology 1N4148UBCD is a small signal switching diode featuring ceramic bodied construction for military grade products per MIL-PRF-19500/116. It operates with a working peak reverse voltage of 75 V and a maximum breakdown voltage of 100 V. The device supports an average rectified current of 200 mA at 75 °C and handles non-repetitive sinusoidal surge currents up to 2 A. Electrical characteristics include a forward voltage of 0.8 V at 10 mA and 1.2 V at 100 mA, with a reverse recovery time of 5 ns. Capacitance measures 4.0 pF at 0 V and 2.8 pF at 1.5 V.

Diode Arrays Feature Summary

• Surface mount equivalent of the popular JEDEC registered 1N4148 number.
• Features very low capacitance and very fast switching speeds with minimal reverse recovery times.
• Constructed with a ceramic body suitable for military grade applications.

Diode Arrays Applications

• High frequency data lines
• RS-232 & RS–422 interface networks
• Ethernet 10 Base T
• LAN
• Computers

Diode Arrays Procurement Notes

Verify the specific qualification level (JAN, JANTX, or JANTXV) required for your application, as the base part number may correspond to commercial grade unless specified otherwise in the ordering information. Confirm that the UB package dimensions align with your PCB footprint requirements. Ensure thermal management strategies account for the junction-to-ambient thermal resistance values provided in the datasheet graphs. Check for any recent Product Change Notifications regarding manufacturing updates.

Diode Arrays Selection Notes

Select this component when a surface mount solution replacing the axial 1N4148 is needed for high-speed switching applications. The ceramic construction makes it suitable for environments requiring higher reliability than standard plastic packages. Consider the available polarities, such as common cathode or doubler configurations, if multiple diodes are required in a single package. Verify that the operating temperature range of -65 to +200 °C meets your system's environmental constraints.

Diode Arrays Part Context

The 1N4148UBCD belongs to the 1N4148UB family of switching diodes manufactured by Microchip Technology. This family includes variants like the 1N4148UB (standard UB package), 1N4148UBC (ceramic lid), and 1N4148UB2 (2-pin). These devices are designed as direct surface mount replacements for the traditional through-hole 1N4148, offering similar electrical performance in a compact form factor suitable for modern electronics assembly.

Diode Arrays Replacement Considerations

Direct pin-compatible surface mount alternatives within the same family include the 1N4148UBC and 1N4148UB2. For through-hole replacements, the 1N4148-1 in the DO-35 package offers comparable specifications. Ensure that any substitute maintains the required MIL-PRF-19500/116 qualification if military-grade reliability is mandatory.

Diode Arrays FAQ

What is the reverse recovery time for the 1N4148UBCD?

The reverse recovery time (trr) is typically 5 ns under test conditions of IF = IR = 10 mA with RL = 100 Ohms.

Is the 1N4148UBCD RoHS compliant?

Yes, the device is RoHS compliant by design according to the manufacturer's documentation.

What is the maximum junction temperature for this diode?

The maximum junction and storage temperature (TJ & TSTG) ranges from -65 to +200 °C.